A source spilled to The Sun about how the precious pair is embracing the news, saying:

"This is great news. It will be Mick's eighth child and nothing fazes him. He's been incredibly supportive."

The insider also told the tabloid about the ballerina beauty is super excited to be a mom, adding:

"She's very bright, intelligent, sparky and has her own ideas about how she wants to lead her life. She knows what a great relationship Mick has with all of his children and can't wait for him to be a dad again. They are taking the news in their stride."

Well, we're happy that they're happy!

And believe it or not, Perezcious readers, this comes just a few months after the iconic artist's 68-year-old bandmate, Ronnie Wood, welcomed twins with his wife, Sally!